Apollo-ios: Mutation Record keys do not match stored keys from query for NormalizedCache

[uericw]

When I make call apolloClient.watch() using the AllPostsQuery(), I get a RecordSet with Record keys that is prefixed with #QUERY_ROOT. Then when I call apolloClient.perform(), using UpvotePostMutation(postId: postId), I get a RecordSet with Record keys that is prefixed with #MUTATION_ROOT. Since the keys don't match, the cache does not get updated. I tried this with both the _SQLiteNormalizedCache_ and the _InMemoryNormalizedCache_.

Actual outcome

RecordSet from call to watch().

▿ [#QUERY_ROOT.posts.0 -> ["title": Introduction to GraphQL, "__typename": Post, "id": 1, "votes": 978, "author": -> #QUERY_ROOT.posts.0.author], #QUERY_ROOT -> ["posts": [-> #QUERY_ROOT.posts.0, -> #QUERY_ROOT.posts.1, -> #QUERY_ROOT.posts.2]], #QUERY_ROOT.posts.1 -> ["title": GraphQL Rocks, "__typename": Post, "id": 2, "votes": 660, "author": -> #QUERY_ROOT.posts.1.author], #QUERY_ROOT.posts.0.author -> ["firstName": Tom, "lastName": Coleman, "__typename": Author], #QUERY_ROOT.posts.2.author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author], #QUERY_ROOT.posts.2 -> ["title": Advanced GraphQL, "__typename": Post, "id": 3, "votes": 746, "author": -> #QUERY_ROOT.posts.2.author], #QUERY_ROOT.posts.1.author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author]]

RecordSet from call to perform().

▿ [#MUTATION_ROOT.upvotePost(postId:3) -> ["title": Advanced GraphQL, "__typename": Post, "id": 3, "votes": 747, "author": -> #MUTATION_ROOT.upvotePost(postId:3).author], #MUTATION_ROOT -> ["upvotePost(postId:3)": -> #MUTATION_ROOT.upvotePost(postId:3)], #MUTATION_ROOT.upvotePost(postId:3).author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author]]

Note how the keys from the mutation does not match the existing query keys. Any idea why I am getting these Record keys?

Intended outcome

RecordSet from call to watch()

▿ [#1.author -> ["firstName": Tom, "lastName": Coleman, "__typename": Author], #2 -> ["title": GraphQL Rocks, "__typename": Post, "id": 2, "votes": 660, "author": -> #2.author], #1 -> ["title": Introduction to GraphQL, "__typename": Post, "id": 1, "votes": 978, "author": -> #1.author], #QUERY_ROOT -> ["posts": [-> #1, -> #2, -> #3]], #3 -> ["title": Advanced GraphQL, "__typename": Post, "id": 3, "votes": 744, "author": -> #3.author], #2.author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author], #3.author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author]]

RecordSet from call to perform()

▿ [#3 -> ["title": Advanced GraphQL, "__typename": Post, "id": 3, "votes": 745, "author": -> #3.author], #MUTATION_ROOT -> ["upvotePost(postId:3)": -> #3], #3.author -> ["firstName": Sashko, "lastName": Stubailo, "__typename": Author]]

[martijnwalraven]

If you want to use the id field as the cache key, you'll have to configure the client to do so:

apolloClient.cacheKeyForObject = { $0["id"] }

Note that this assumes id is unique across types. If that isn't the case, you may want to add __typename to the key:

apolloClient.cacheKeyForObject = { [$0["__typename"], $0["id"]] }

[uericw]

Thank you for the reminder. apolloClient.cacheKeyForObject was what I was missing.

[ravishagnihotri45]

Error at path "allMessageConnection": missingValue getting this issue while creating the new message

[ravishagnihotri45]

In AWs app sync